package com.zzyl.nursing.mapper;

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

@Mapper
public interface UserMapper {
    /**
     * 根据用户id查询用户姓名
     * @param userId
     * @return
     */
    String selectUserNameById(@Param("userId") Long userId);
}
